One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(9,10,12,14)(11,15,16,13)(17,18)(19,23)(20,24)(21,27)(22,25)(26,28)(29,32)(30,31)(1,2)(3,6)(4,5)(7,8)(9,11)(10,13)(12,16)(14,15)(17,19,22,27)(18,21,25,23)(20,24,29,32)(26,28,31,30)(10,14)(13,15)(17,20,22,29)(18,24,25,32)(19,26,27,31)(21,30,23,28)(2,5)(6,8)(11,16)(13,15)(17,19)(18,21)(20,26)(22,27)(23,25)(24,30)(28,32)(29,31) involution — undirected(1,3,4,7)(2,6,5,8)(17,21,22,23)(18,19,25,27)(20,28,29,30)(24,31,32,26)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.